Swiss railcar manufacturer Stadler Rail AG, which manufactures regional rail and tram transport systems, is a leading manufacturer of rack rail vehicles. Stadler’s technical specialists are responsible for mobile measurements of vehicle dynamics on the equipment they manufacture. They use MSR's miniature, autonomous simple-to-use universal data loggers that feature built-in highly sensitive sensors for a wide variety of parameters, and, being small, are convenient and unobtrusive to install. MSR Electronics GmbH (Switzerland) manufactures tiny lightweight loggers that can sense almost any physical and electrical measurement: temperature, humidity, pressure, brightness, vibrations, or other voltage-based sensor output values. Stadler Rail has used MSR’s dataloggers in many different applications, such as for the investigation of sudden vibrations or other vibration phenomena in rail vehicle operation. According to Stadler’s engineers, the qualities of these data loggers - autonomous, self-powered, very small, very large memory – make them ideal for mobile vibration studies, and they can also be rapidly deployed for spontaneous measurements. These tiny data recorders can installed quickly and unobtrusively, and provide fast set-up vibration monitoring that can quantify actual train riding comfort. "Passenger requirements for ride comfort, which is greatly affected by vibration behavior, have grown increasingly stringent in recent years," said one of Stadtler's scientists. "Our tests monitor three-axis acceleration on the vehicle floor, on the chassis, and in the center of the car with MSR data loggers, so we can provide objective measurements and thus give a numerical indication of ride comfort."
More details here: http://www.saelig.com/category/MFR00058.htm
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